user
Can you help with this?

Create a valid regular expression.

assistant
^(([A-Za-z0-9]+_+)|([A-Za-z0-9]+\-+)|([A-Za-z0-9]+\.+)|([A-Za-z0-9]+\++))*[A-Za-z0-9]+@{1}((\w+\-+)|(\w+\.))*\w{1,}\.{1}[a-zA-Z]{2,63}$